Technology and Methodology |
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THEEXTRACTIONOFWATERINFORMATIONINURBANAREAS
BASEDONSPOT5IMAGEUSINGOBJECT-ORIENTEDMETHOD |
CAOKai 1,2,JIANGNan 2,LüHeng 2,ZHOULian-yi 2,LIUXin 2 |
1.SchoolofGeographyandOceanographicSciences,NanjingUniversity,Nanjing210093,China;2.NanjingInstituteof
GeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,China |
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Abstract Withthemaincityzonesastheresearcharea,thispaperstudiedthemethodforextractingwaterinfor
mationinSPOT5image.First,theimageissegmentedbymulti-segmentationmethods.Afterthat,incombina
tionwithsomespectral,shapeandtexturalcharacteristics,themulti-levelclassificationmethodcanbesetup.
Theresultshowsthatthiskindofclassificationmethodusedtoextractthewaterinformationincityzoneshasnoton
lyabundantrules-meaninginformationthatcanreducethesalt-phenomenonbutalsoobviouslyhighaccuracy.
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Keywords
Plateau lake
Dynamic monitoring
Meteorological satellite
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Issue Date: 24 July 2009
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